Ford Focus ST250 200 Cell Sports Cat Upgrade Guide
Upgrading your Ford Focus ST250 with a 200 cell sports cat is one of the most effective ways to unlock additional performance, improve exhaust flow and enhance the overall driving experience. Designed for enthusiasts looking to bridge the gap between daily usability and increased power, this upgrade delivers noticeable gains without compromising drivability.
The Gravity Performance™ Ford Focus ST250 200 Cell Sports Cat is engineered to optimise exhaust efficiency while maintaining compatibility with standard and modified setups.
Shop performance exhaust upgrades below.
What Is a 200 Cell Sports Cat?
A 200 cell sports catalytic converter is a high-flow alternative to the restrictive factory catalytic converter found on the Focus ST250.
The “200 cell” structure refers to the internal density of the catalyst. Compared to OEM units, it allows exhaust gases to pass through more freely, reducing back pressure and improving turbo efficiency.
Key advantages include:
- Increased exhaust flow
- Reduced turbo restriction
- Improved throttle response
- Enhanced exhaust note
This makes it a popular upgrade for drivers running Stage 1 or Stage 2 tuning setups.
View our YouTube video below!
Performance Gains on the Focus ST250
The Focus ST250’s 2.0L EcoBoost engine responds exceptionally well to exhaust upgrades. By replacing the standard catalytic converter with a high-flow 200 cell sports cat, you allow the turbocharger to spool more efficiently.
Expected performance benefits:
- Faster turbo spool
- Increased horsepower and torque (especially when mapped)
- Smoother power delivery
- Reduced exhaust gas temperatures
When paired with other upgrades such as an induction kit or intercooler, the gains become even more noticeable.
Explore compatible upgrades here.
Exhaust Sound: Before and After
One of the biggest reasons enthusiasts choose a sports cat upgrade is the transformation in exhaust sound.
With the Gravity Performance 200 cell sports cat installed, the Focus ST250 produces:
- A deeper, more aggressive tone
- Increased turbo spool noise
- Subtle pops and crackles (depending on setup)
Importantly, it avoids the excessive rasp often associated with decat systems, making it ideal for road use.
Why Choose a 200 Cell Sports Cat Over a Decat?
While decat pipes offer maximum flow, they are not always practical for road cars in the UK due to emissions regulations.
A 200 cell sports cat provides the perfect balance:
Sports Cat vs Decat:
- ✅ Road-friendly emissions (more MOT-friendly)
- ✅ Refined exhaust tone
- ✅ Strong performance gains
- ❌ Slightly less flow than a full decat (but negligible for most builds)
For most ST250 owners, a sports cat is the smarter long-term upgrade.
Installation & Compatibility
The Gravity Performance ST250 sports cat is designed for a direct fit, making installation straightforward for those familiar with exhaust components.
Installation highlights:
- Direct replacement for OEM catalytic converter
- Compatible with aftermarket cat-back systems
- Works with Stage 1 and Stage 2 tunes
- Typically installed in under 2 hours
Professional installation is recommended to ensure optimal fitment and performance.
Supporting Mods for Best Results
To maximise the benefits of a sports cat upgrade, it’s best paired with other performance components.
Recommended supporting upgrades:
- Induction kits for improved airflow
- Front mount intercoolers for better cooling
- Performance cat-back exhaust systems
- ECU remapping (Stage 1 or Stage 2)
Combining these upgrades creates a more responsive and powerful driving experience.
Build your full setup below.
Why Choose Gravity Performance?
Gravity Performance is trusted by enthusiasts for delivering high-quality, precision-engineered exhaust components designed for real-world performance.
What sets Gravity Performance apart:
- Designed specifically for the Focus ST250 platform
- High-quality materials for durability
- Optimised flow for performance gains
- Excellent value compared to premium brands
Whether you’re upgrading for sound, power or both, this sports cat offers a proven solution.
Upgrade Your Focus ST250 Today
If you’re looking to take your Ford Focus ST250 to the next level, a 200 cell sports cat is one of the most effective upgrades available. It delivers the perfect blend of performance, sound and everyday usability.
Unlock better airflow, sharper response and a more aggressive exhaust note today.